I play COD2 and was looking for a very cheap upgrade to my system as I currently play with an mx420 and 256 RAM. I can buy a stick of 512 for like $45 on newegg, but I need some video card advice. I just want to know what card can keep me at 125 fps stable and locked at lowest settings and what one can keep me at 333. Remember lowest on DX7 is what I'm shooting for.